CN2765028Y - Stabilized voltage type pressure-reducing valve - Google Patents
Stabilized voltage type pressure-reducing valve Download PDFInfo
- Publication number
- CN2765028Y CN2765028Y CN 200420116095 CN200420116095U CN2765028Y CN 2765028 Y CN2765028 Y CN 2765028Y CN 200420116095 CN200420116095 CN 200420116095 CN 200420116095 U CN200420116095 U CN 200420116095U CN 2765028 Y CN2765028 Y CN 2765028Y
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Abstract
The utility model relates to a pressure stabilization type pressure-reducing valve which instead of an AC oil pump can utilize high pressure oil outputted from a main oil pump of a generator for a shaft sealing oil supply system after carrying out pressure reducing of the high pressure oil. The valve is composed of an automatic pressure stabilizing device and a manual regulation valve and works in a double-channel mode. The inlet end of the pressure-reducing valve is connected with an outlet of the main oil pump of the generator for inputting the high pressure oil, and the outlet end is connected with the shaft sealing oil supply system of the generator. The pressure of the outputted oil is mainly regulated by once regulation of the manual regulation valve, when the pressure is dropped down, the pressure stabilizing device can be automatically opened to carry out pressure compensation while the pressure is maintained to be unchanged. The through-flow area can not be changed any more after the regulation of the manual regulation valve is completed, so that an accident of oil breakage can not occur. Meanwhile, the oil pressure formed by the manual regulation valve always acts on the lower part of a valve core of an automatic pressure stabilizing valve, so that no vibration of the automatic pressure stabilizing valve can occur in the process of opening, or closing, or running.
Description
Affiliated technical field
The present invention relates to a kind of high pressure oil and after decompression, be used for the decompressor that the shaft sealing oil supply system replaces the fuel turn manifold pump work, the shockproof stabilivolt type pressure reducer of particularly a kind of Twin channel the output of generator set main oil pump.
Background technique
At present, the structural type of traditional relief valve and stable-pressure device part of the present invention are similar, in generator shaft sealing oil supply system, seldom use, its reason is the system equipment complexity, pipeline is also many, and reduction valve is in use easy and shake altogether takes place in system or bite causes oil-break and causes the serious accident that runs hydrogen, leakage hydrogen.Be full of hydrogen in the generator, catch fire even explode in case leakage will cause, the effect of shaft sealing oil supply system is to set up a sealing oil press seal that is higher than the hydrogen certain value at the generator axle head to live hydrogen and make it can not leak, and traditional reduction valve is not used because of the Security that does not possess this strictness.
Summary of the invention
The objective of the invention is: design and a kind ofly the high pressure oil of generator main oil pump outlet can be reduced to the oil pressure of sealing oil needs, and can not shake, can not oil-break, output be again the reduction valve of stablizing oil pressure.The reliability of this valve even much larger than exchanging oil pump.
The present invention is achieved by following manner: a kind of shockproof stabilivolt type pressure reducer is made up of two-part, a part is automatic voltage regulator (as shown in Figure 3), another part is a manual modulation valve (as shown in Figure 4), the similar traditional reduction valve of automatic voltage regulator, so be called automatic voltage regulator but only play auxiliary pressure stabilization function in the present invention, the groundwork of decompression is finished by manual modulation valve.Automatic voltage regulator mainly is made up of members such as automatic voltage regulation adjustable lever 1, valve gap 2, valve body 3, spring 8, spool 9, bottom plugs 16; Manual modulation valve mainly is made up of members such as valve body 3, manual tune doors 4, and this is a major character of the present invention.
Working principle of the present invention is: at first oil-feed flange 5 is connected the main oil pump outlet, fuel-displaced flange 6 connects empty side sealing oil oil supply system (as shown in Figure 1), the high pressure oil from the main oil pump outlet of devoting oneself to work afterwards is divided into two oil circuits after by public oil inlet hole 10, one road binders enters oil-feed chamber 12 as (shown in the accompanying drawing 3) through automatic voltage regulation oil inlet hole 11, another road then is about to enter low pressure oil chamber 23 as (shown in the accompanying drawing 4) by manual tune valve base hole 21, adjust automatic voltage regulation adjustable lever 1 (shown in the accompanying drawing 3) this moment, spool 9 is moved down, the high pressure oil of oil-feed chamber 12 13 enters out oil-in chamber 15 with the gap of valve core cone door 14 through the gate seat hole, through oil outlet 19, oil outlet 20,6 pairs of empty side oil supply system fuel feeding of fuel-displaced flange, when system oil pressure near rated oil pressure but stop when being lower than rated oil pressure regulating, this is the working value of automatic voltage regulator.Adjust manual tune door 4 (as shown in Figure 4) then, make sky side sealing oil oil supply system oil pressure reach rating value, the high pressure oil of main oil pump outlet this moment is through public filler opening 10, manual tune valve base hole 21 arrives low-pressure cavity 23 with the gap of tapered gate 22 through decompression, through oil through 24, valve body bottom oil-in chamber 18, public oil outlet 20 (as shown in Figure 3), 6 pairs of empty side sealing oil oil supply system fuel feeding of fuel-displaced flange, oil pressure in the valve body bottom oil-in chamber 18 acts on the bottom of spool 9 by the aperture on the bottom plug 16 17 simultaneously, because this moment, oil pressure was higher than the pressure that spring 8 is adjusted, so promotion spool 9 moves up automatic voltage regulator cut out.So far the oil pressure of sealing oil oil supply system is supplied with by the passage of manual modulation valve control fully, can not close voluntarily behind the manual tune opening of valves, and flow area can not change yet, and can definitely guarantee not have the oil-break accident and take place.When system oil pressure being reduced and be lower than the working value of automatic voltage regulator, automatic voltage regulator can be opened automatically under spring action system oil pressure is compensated, and stable oil pressure no longer continues to descend.The major character of Twin channel work of the present invention that Here it is.Because there is a oil pressure to act on the bottom of automatic voltage regulator spool all the time from manual modulation valve, so opening, cut out or move, automatic voltage regulator can not shake, very steady when especially moving, this is an another feature of the present invention.The present invention is the 200000 kilowatts of units in second power station, 50,000 kilowatts, 100,000 kilowatts unit operations of Jiamus No.2 Power Plant through Mudanjiang, prove that every performance of this valve all meets design idea of the present invention.
The invention has the beneficial effects as follows, can with the high pressure oil of main oil pump output safe and reliable be used for the shaft sealing oil supply system, and have characteristics shockproof, voltage stabilizing, this safe operation and energy saving for power plant all has substantial meaning.
Description of drawings
Accompanying drawing 1 is the stabilivolt type pressure reducer plan view
Accompanying drawing 2 is stabilivolt type pressure reducer left views
Accompanying drawing 3 is stabilivolt type pressure reducer A-A sectional views
Accompanying drawing 4 is stabilivolt type pressure reducer B-B sectional views
Sequence number among the figure: 1 automatic voltage regulation adjustable lever, 2 valve gaps, 3 valve bodies, 4 manual tune doors, 5 oil-feed flanges, 6 fuel-displaced flanges, 7 draining holes, 8 springs, 9 spools, 10 filler openings, 11, automatic voltage regulation oil inlet hole, 12 oil-feed chambers, 13 gate seat holes, 14 valve core cone doors, 15 go out oil-in chamber, 16 bottom plugs, 17 bottom plug apertures, 18 valve bodies bottom oil-in chamber, 19 oil outlets, 20 oil outlets, 21 manual tune valve base holes, 22 tapered gates, 23 low pressure oil chambers, 24 oil throughs
Embodiment
Stabilivolt type pressure reducer is made up of critical pieces such as automatic voltage regulation adjustable lever 1, valve gap 2, valve body 3, manual modulation valve 4, spring 8, spools 9 shown in Fig. 1-4, wherein valve gap 2 endoporus dispose the spring 8 (as shown in Figure 3) that designs, and adjust by automatic voltage regulation regulating lever 1, spring is placed on the top of spool 9, cone boss on the spool forms cone door 14 and cooperates with the gate seat hole 13 of valve body, the lower end of valve body disposes bottom plug 16, and is provided with aperture 17 on bottom plug 16.The aperture of the interaction control valve core cone door 14 of the pressure of spool upper springs and spool bottom oil pressure plays the effect of automatic adjustment oil pressure.Valve body 3 also is provided with public oil inlet hole 10 and communicates with oil-feed chamber 12 through automatic voltage regulation oil inlet hole 11, oil-feed chamber 12 is communicated with the oil supply gallery of oil-in chamber 15, oil outlet 19, public oil outlet 20 formation stable-pressure devices through gate seat hole 13, and being provided with draining hole 7 (as shown in Figure 2) on the top of valve body, effect is that the oil that will penetrate into spool top through the spool gap releases in order to avoid form pressure on spool top.Side at valve body disposes manual tune door 4 and valve body formation manual modulation valve (as shown in Figure 4) in addition, public oil inlet hole 10 is communicated with low pressure oil chambers 23 through manual regulating valve seat hole 21, oil through 24, valve body bottom oil-in chamber 18, and through valve body bottom oil-in chamber 18 connection public oil outlets 20 (as shown in Figure 3), constitute the manual tune passage, under normal circumstances the oil pressure to the output of shaft sealing oil supply system is mainly formed by manual modulation valve control, flow area also was fixed and can change after the manual tune valve opening was fixed, what export will be a constant flow, the oil-break phenomenon can not take place, this is the basic condition of safe operation, but when increasing with oil mass, sealing oil system can cause that pressure descends, when oil pressure is reduced to a setting value, stable-pressure device can be opened automatically and replenish flow to sealing oil system and keep pressure and no longer descend, this is a voltage stabilizing feature of the present invention, so can not shake when work because the pressure that has a manual modulation valve control to form all the time acts on the bottom stable-pressure device of spool 9, this also is one of major character of the present invention.
Claims (3)
1, a kind of stabilivolt type pressure reducer, by the automatic voltage regulation regulating lever, valve gap, valve body, spool, spring, the manual tune door is formed, it is characterized in that: by valve body (3), spool (9), valve gap (2), spring (8), automatic voltage regulation regulating lever (1) constitutes stable-pressure device, by valve body (3), manual tune door (4) constitutes manual modulation valve, public oil inlet hole (10) in the valve body is communicated with stable-pressure device and manual modulation valve respectively, and constitute main service aisle by manual modulation valve, constitute the back work passage by stable-pressure device, system is carried out voltage stabilizing, form the Twin channel regulative mode thus.
2, stabilivolt type pressure reducer according to claim 1, it is characterized in that: the interior voltage stabilizing part of valve body (3) is provided with oil inlet hole (10) successively, oil inlet hole (11), oil-feed chamber (12), gate seat hole (13), go out oil-in chamber (15), oil outlet (19), oil outlet (20), bottom oil-in chamber (18), bottom plug (17), be equipped with in the valve gap (2) spring (8) through automatic voltage regulation adjustable lever (1) regulating action in the upper end of spool (9), spool (9) is provided with cone boss (14) and matches with valve body gate seat hole (13), wherein filler opening (10), oil outlet (20), bottom oil-in chamber (18) communicates with manual modulation valve.
3, stabilivolt type pressure reducer according to claim 1, it is characterized in that: the valve body opposite side is provided with the manual tune valve base hole (21) that is communicated with filler opening (10), low pressure oil chamber (23), oil through (24) successively, is communicated with bottom oil-in chamber (18), oil outlet (20) then, constitutes the manual tune passage with manual tune door (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420116095 CN2765028Y (en) | 2004-12-08 | 2004-12-08 | Stabilized voltage type pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420116095 CN2765028Y (en) | 2004-12-08 | 2004-12-08 | Stabilized voltage type pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765028Y true CN2765028Y (en) | 2006-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420116095 Expired - Fee Related CN2765028Y (en) | 2004-12-08 | 2004-12-08 | Stabilized voltage type pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2765028Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453871C (en) * | 2004-12-08 | 2009-01-21 | 刘敬善 | Stabilivolt type pressure reducer |
| CN104696555A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | A high-pressure high-flow helium relief valve |
-
2004
- 2004-12-08 CN CN 200420116095 patent/CN2765028Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453871C (en) * | 2004-12-08 | 2009-01-21 | 刘敬善 | Stabilivolt type pressure reducer |
| CN104696555A (en) * | 2013-12-04 | 2015-06-10 | 上海宇航系统工程研究所 | A high-pressure high-flow helium relief valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Sun Yuping Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |